Title:
BATTERY ENERGY STORAGE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/036685
Kind Code:
A1
Abstract:
Disclosed in the present invention is a battery energy storage system, comprising a control system and phase circuits. Each phase circuit comprises multiple sequentially cascaded subsystems. Each subsystem comprises: a battery pack; a bridge converter module having an alternating current side and a coupling side; a coupling module used for coupling and matching the bridge converter module and the battery pack; a battery equalization module used for monitoring the working state of each energy storage battery and also used for equalizing the power levels of batteries in the battery pack in response to an equalization control signal; and a controller used for controlling at least two of the bridge converter module, the coupling module, and the battery equalization module. The controller in each subsystem controls the working state of the subsystem on the basis of a control signal from the control system. Thus, the adverse impact on the energy storage performance of a battery system in an energy storage system caused by the battery having the largest deviation in a battery pack is reduced, and reliable and safe working of a battery energy storage system is ensured.
Inventors:
FENG YADONG (CN)
CHEN YONG (CN)
ZHU JIHONG (CN)
LI QIUHUA (CN)
CHEN YONGKUI (CN)
CHEN YONG (CN)
CHEN YONG (CN)
ZHU JIHONG (CN)
LI QIUHUA (CN)
CHEN YONGKUI (CN)
CHEN YONG (CN)
Application Number:
PCT/CN2022/119307
Publication Date:
February 22, 2024
Filing Date:
September 16, 2022
Export Citation:
Assignee:
NANJING HZ ELECTRIC CO LTD (CN)
International Classes:
H02J3/32; H02J3/01; H02J7/00; H02J13/00
Foreign References:
| CN109039136A | 2018-12-18 | |||
| CN106532829A | 2017-03-22 | |||
| CN106926741A | 2017-07-07 | |||
| CN204858603U | 2015-12-09 | |||
| US20200070667A1 | 2020-03-05 |
Attorney, Agent or Firm:
SHENZHEN J&Q INTELLECTUAL PROPERTY CO., LTD. (CN)
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